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submitted 5 days ago* (last edited 5 days ago) by NateNate60@lemmy.world to c/programmerhumor@lemmy.ml

^.?$|^(..+?)\1+$

Matches strings of any character repeated a non-prime number of times

https://www.youtube.com/watch?v=5vbk0TwkokM

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[-] ikidd@lemmy.world 2 points 4 days ago

I was a sysadmin with some Linux usage in 1998, does that count?

this post was submitted on 31 Oct 2024
333 points (98.0% liked)

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